package com.lanzx.gulimall.product.config;

import com.alibaba.fastjson.support.spring.GenericFastJsonRedisSerializer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.cache.CacheProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * @author: lanzx
 * @description:
 * @date: 2021/1/4 13:21
 */
@EnableConfigurationProperties(CacheProperties.class)
@Configuration
@EnableCaching
public class MyCacheConfig {

    /**
     * 配置文件中的东西没有用上：
     *
     * 1、原来和配置文件绑定的配置类是这样的
     *      @ConfigurationProperties(prefix = "spring.cache")
     *      public class CacheProperties
     *
     * 2、 要让他生效，需要开启属性配置的绑定功能
     *      @EnableConfigurationProperties(CacheProperties.class)
     */
    @Bean
    RedisCacheConfiguration redisCacheConfiguration(CacheProperties cacheProperties) {
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();

        // 修改 key 的 序列化为 string
        config = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()));
        // 修改 value 的序列化为 FastJSON
        //config = config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericFastJsonRedisSerializer()));
        config = config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));

        CacheProperties.Redis redisProperties = cacheProperties.getRedis();
        // 将配置文件中的所有配置都生效
        if (redisProperties.getTimeToLive() != null) {
            config = config.entryTtl(redisProperties.getTimeToLive());
        }
        if (redisProperties.getKeyPrefix() != null) {
            config = config.prefixKeysWith(redisProperties.getKeyPrefix());
        }
        if (!redisProperties.isCacheNullValues()) {
            config = config.disableCachingNullValues();
        }
        if (!redisProperties.isUseKeyPrefix()) {
            config = config.disableKeyPrefix();
        }

        return config;
    }
}
